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简单例子

package com.peidw;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.HandlerThread;import android.os.Message;import android.text.Html;import android.util.Log;import android.view.Menu;import android.view.MenuItem;import android.widget.TextView;/** *  * @author peidw * */public class HandlerThreadActivity extends Activity {	private TextView mt; 	private Handler mcHandler=new Handler(){ 		@Override 		public void handleMessage(Message msg) { 			 mt.setText(Html.fromHtml((String)msg.obj)); 			mcHandler.post( update_thread);  		} 	}; 		private boolean isUpdateInfo=true;		//与UI线程管理的handler     private static final int MSG_UPDATE_INFO = 0x110;    	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.activity_handler_thread);		//创建后台线程 		 		mt = (TextView) findViewById(R.id.id_textview);		 		mcHandler.post(update_thread);	}	  	@Override	public boolean onCreateOptionsMenu(Menu menu) {		// Inflate the menu; this adds items to the action bar if it is present.		getMenuInflater().inflate(R.menu.handler_thread, menu);		return true;	}	@Override	public boolean onOptionsItemSelected(MenuItem item) {		// Handle action bar item clicks here. The action bar will		// automatically handle clicks on the Home/Up button, so long		// as you specify a parent activity in AndroidManifest.xml.		int id = item.getItemId();		if (id == R.id.action_settings) {			return true;		}		return super.onOptionsItemSelected(item);	}		private void initBack(){		Log.i ("AA----->","-----------------initBack");		//ht=new   HandlerThread("check-message-coming");		//ht.start();		Log.i ("AA----->","-----------------isUpdateInfo="+isUpdateInfo);			}	 Runnable update_thread = new Runnable()	 {		 int i=0;		 public void run(){			 Message msg = mcHandler.obtainMessage();			 			 try {				Thread.sleep(2000);			} catch (InterruptedException e) {				// TODO Auto-generated catch block				e.printStackTrace();			}             String result = "实时更新中，当前大盘指数：%d";             result = String.format(result, (int) (Math.random() * 3000 + 1000));             msg.obj=result;             mcHandler.sendMessage(msg);             if(i>100){            	 mcHandler.removeCallbacks(update_thread);             }		 }	 };	  	 		}

layout 

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